<template>
   <div class="list" ref="wrapper">
     <div>
       <div class="area">
        <div class="title border-topbottom">
          当前城市
        </div>
        <div class="button-list">
          <div class="button-wrapper">
              <div class="button">{{this.$store.state.city}}</div>
          </div>
        </div>
       </div>

       <div class="area">
        <div class="title border-topbottom">
          热门城市
        </div>
        <div class="button-list">
          <div class="button-wrapper"
               v-for="item of hot"
               :key="item.id"
               @click="handleCityClick(item.name)"
          >
              <div class="button">{{item.name}}</div>
          </div>
        </div>
       </div>

       <div class="area"
          v-for="(item,key) of cities"
          :key="key"
          :ref="key"
        >
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
            <div class="item border-bottom"
                 v-for="itemInner of item"
                 :key="itemInner.id"
                 @click="handleCityClick(itemInner.name)"
            >
                {{itemInner.name}}
            </div>
        </div>
       </div>
      </div>
   </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: "CityList",
  props:{
    hot:Array,
    cities:Object,
    letter:String
  },
  mounted () {
    this.$nextTick(() => {
         this.scroll = new Bscroll(this.$refs.wrapper, {click:true})
    })
  },
  methods:{
    handleCityClick(city){
      this.$store.commit('changeCity',city);
      this.$router.push('/');
    }
  },
  watch :{
    letter (){
      //console.log(this.letter)
      if(this.letter){
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
};
</script>

<style scoped lang="stylus">
@import '~styles/varibles.styl';

.border-topbottom {
  &:before {
    border-color: #ccc;
  }

  &:after {
    border-color: #ccc;
  }
}

.border-bottom {
  &:before {
    border-color: #ccc;
  }
}

.list {
  overflow: hidden;
  position: absolute;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;

  .title {
    line-height: 0.54rem;
    background: #eee;
    padding-left: 0.2rem;
    color: #666;
    font-size: 0.26rem;
  }

  .button-list {
    overflow: hidden;
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;

    .button-wrapper {
      float: left;
      width: 33.33%;

      .button {
        margin: 0.1rem;
        padding: 0.1rem 0;
        text-align: center;
        border: 0.02rem solid #ccc;
        border-radius: 0.06rem;
      }
    }
  }

  .item-list {
    .item {
      line-height: 0.76rem;
      padding-left: 0.2rem;
    }
  }
}
</style>
